Ultrahigh-rectification near-field radiative thermal diode using infrared-transparent film backsided phase-transition metasurface

被引:19
作者
Liu, Yang [1 ]
Tian, Yanpei [1 ]
Chen, Fangqi [1 ]
Caratenuto, Andrew [1 ]
Liu, Xiaojie [1 ]
Antezza, Mauro [2 ,3 ]
Zheng, Yi [1 ]
机构
[1] Northeastern Univ, Dept Mech & Ind Engn, Boston, MA 02115 USA
[2] Univ Montpellier, CNRS, UMR 5221, Lab Charles Coulomb L2C, F-34095 Montpellier, France
[3] Inst Univ France, 1 Rue Descartes, F-75231 Paris 05, France
基金
美国国家科学基金会;
关键词
HEAT-TRANSFER;
D O I
10.1063/5.0058779
中图分类号
O59 [应用物理学];
学科分类号
摘要
We present a theoretical study of near-field radiative thermal rectification combining phase-transition and high-infrared-transmittance materials. The phase-transition material vanadium dioxide (VO2), with a metal-insulator transition near 341 K, is utilized under a reasonable temperature. Four types of high-infrared-transmittance materials, including potassium bromide, sodium chloride, polyethylene, and magnesium fluoride, are introduced as thin film substrates under a VO2 grating on one side of the near-field rectifier. We explore the effects of various high-infrared-transmittance thin-film substrates and relevant geometric parameters on the thermal rectification of the device. The results show that thermal rectification can be greatly enhanced by using a one-dimensional VO2 grating backed with a high-infrared-transmittance thin-film substrate. With the introduction of a high-infrared-transmittance substrate, the rectification ratio is dramatically boosted due to the enhancement of the substrate transmittance. This work predicts a remarkable rectification ratio as high as 161-greater than the recently reported peak values for comparable near-field radiative thermal rectification. The results outlined herein will shed light on the rapidly expanding fields of nanoscale thermal harvesting, conversion, and management. Published under an exclusive license by AIP Publishing.
引用
收藏
页数:6
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